Transcribed Image Text: Energy release Consider these three events: (1) On May 18, 1980, the volcanic eruption of Mount St. Helens in Washington released approximately

Academic Writing advanced-physics Transcribed Image Text: Energy release Consider these three events: (1) On May 18, 1980, the volcanic eruption of Mount St. Helens in Washington released approximately

advanced-physics

Transcribed Image Text: Energy release Consider these three events: (1) On May 18, 1980, the volcanic eruption of Mount St. Helens in Washington released approximately

Transcribed Image Text: Energy release Consider these three events:
(1) On May 18, 1980, the volcanic eruption of Mount
St. Helens in Washington released approximately
1.7 X 1018 joules of energy.
(2) When a 1-megaton nuclear bomb detonates, it releases
about 4 X 1015 joules of energy.
(3) The 1989 San Francisco earthquake registered 7.1 on
the Richter scale.
(a) Make some comparisons (i.e., how many of one event
is equivalent to another) in terms of energy released.
(Hint: Refer to Exercise 70 in Chapter 5 Review Ex-
ercises.) Note: The atomic bombs dropped in World
War II were 1-kiloton bombs (1000 1-kiloton
bombs = 1 1-megaton bomb).
(b) What reading on the Richter scale would be equivalent
to the Mount St. Helens eruption? Has there ever been
a reading that high?

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